biology

PHACTR3

PHACTR3 is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand PHACTR3 rather than just read about it. In short: Phosphatase and actin regulator 3 is an enzyme that in humans is encoded by the PHACTR3 gene. Function The protein encoded by this gene is associated with the nuclear scaffold in proliferating cells.

Key takeaways

PHACTR3 belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect PHACTR3 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of PHACTR3 from memory before moving on to harder problems.

Reference excerpt

Phosphatase and actin regulator 3 is an enzyme that in humans is encoded by the PHACTR3 gene.

Function The protein encoded by this gene is associated with the nuclear scaffold in proliferating cells. It was found to bind to the catalytic subunit of protein phosphatase-1 (PP1) and inhibit PP1 activity, suggesting that this protein may function as a regulatory subunit of PP1. Alternative splicing at this locus results in several transcript variants encoding different isoforms.

Interactions PHACTR3 has been shown to interact with PPP1CA.

References

Illustrations

Worked examples

Example 1 — a first encounter with PHACTR3

Start with the simplest possible case. Write down what PHACTR3 claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to PHACTR3 before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about PHACTR3 ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of PHACTR3

In research: PHACTR3 appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses PHACTR3 in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: PHACTR3 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Genes on human chromosome 20, Human chromosome 20 gene stubs, so understanding it makes those chapters shorter.
In everyday life: Look for PHACTR3 outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study PHACTR3 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what PHACTR3 means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain PHACTR3 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is PHACTR3 in simple terms?

Phosphatase and actin regulator 3 is an enzyme that in humans is encoded by the PHACTR3 gene. Function The protein encoded by this gene is associated with the nuclear scaffold in proliferating cells.

Why does PHACTR3 matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study PHACTR3?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on PHACTR3.